package com.zsqat.eshop.order.config;

import feign.RequestInterceptor;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.context.request.RequestContextHolder;
import org.springframework.web.context.request.ServletRequestAttributes;
import javax.servlet.http.HttpServletRequest;

@Configuration
public class OrderFeignConfig {

  @Bean("requestInterceptor")
  public RequestInterceptor requestInterceptor() {
    RequestInterceptor requestInterceptor = template -> {
      // 1.使用RequestContextHolder拿到刚进来的请求数据
      ServletRequestAttributes requestAttributes = (ServletRequestAttributes) RequestContextHolder.getRequestAttributes();
      if (requestAttributes != null) {
        // 老请求
        HttpServletRequest request = requestAttributes.getRequest();

        if (request != null) {
          // 2.同步请求头的数据（主要是cookie）
          // 把老请求的cookie值放到新请求上来，进行一个同步
          String cookie = request.getHeader("Cookie");
          template.header("Cookie", cookie);
        }
      }
    };
    return requestInterceptor;
  }
}
